Constant Check light Unable to read codes

[Nvd323]

Hi all

My Engine check light is on and im unable to get flash codes and tried to aftermarket scan tools with no luck..... Could I be locking at a faulty ecu? It Runs Fine and not in limp mode any help would b great. Ohh I might add the my oil pressure switch has been playing up don't know if this has any thing to do with the above fault

Thank Ryan

[Yendor]

What vehicle and engine do you have?

If it's a diesel have you tried replacing the fuel filter? or at least drain it and check for water in the fuel.

Highly doubt it's a faulty ECU.

[Nvd323]

Yendor u legend! Y does Nissan not have a water light lol. Cheers Mate

[MudRunnerTD]

Yendor u legend! Cheers Mate

Yes he is!!!